A corrosion resistance testing device and testing method for oil drilling rigs

Abstract

The invention discloses a corrosion resistance test device and a test method for a petroleum drilling rig, which relate to the technical field of corrosion resistance detection, and include: an ultrasonic detection sensor, which, in cooperation with an all-round fixed-point comparison detection component, enables the test time and number of cycles under different conditions to be set according to actual needs, so as to facilitate real-time monitoring of various parameters in the spraying process, ensure that the spray is uniform and covers the target area, so as to effectively simulate the continuous flow of drilling fluid during operation according to different pressures and environmental factors to which the drilling rig is subjected, so as to detect the corrosion rate, and through the test accuracy, in cooperation with a dynamic stress monitoring component, an integrated corrosion resistance test device is formed as a whole, so that the mechanical pressure on the drilling machine components at the point is applied in cooperation with the spray contact guide head, so as to facilitate the comprehensive environmental simulation test of the drilling rig, reduce manual intervention, and improve the consistency and reliability of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of corrosion resistance detection, in particular to a corrosion resistance testing device and a testing method for an oil drilling rig. Background Art

[0002] In the process of oil field development and exploitation, the drilling rig is an important development and exploitation equipment. The corrosion resistance of the drilling rig directly affects the service life of the components. If it has excessive corrosion and rust in an acidic or alkaline environment, it will indicate that the corrosion resistance of the drilling rig is poor. The corrosion resistance of the drilling rig is usually judged by observing the usage and surface of the components.

[0003] However, in the prior art, during the use of the drilling rig, the drilling rig is often directly immersed in the corrosive liquid, and after waiting for a period of time, it is taken out and the corrosion resistance of the drilling rig is observed. Although the direct immersion method can detect the corrosion resistance of the drilling rig, in actual drilling operations, the drilling rig is affected by different pressures and environmental factors, and the drilling fluid will continue to flow, which will cause the corrosion rate and pattern to be different from those under static conditions. Therefore, the accuracy of corrosion resistance detection cannot be effectively guaranteed. Therefore, it is necessary to propose a corrosion resistance test device and test method for oil drilling rigs. Summary of the invention

[0004] The purpose of the present invention is to provide a corrosion resistance testing device and method for oil drilling rigs, so as to solve the problem proposed in the above-mentioned background technology that during the use of the drilling rig, the drilling rig is often directly immersed in the corrosive liquid, and after waiting for a period of time, it is taken out and the corrosion resistance of the drilling rig is observed. However, although the direct immersion method can detect the corrosion resistance of the drilling rig, in actual drilling operations, the drilling rig is affected by different pressures and environmental factors, and the drilling fluid will continue to flow, which will cause the corrosion rate and pattern to be different from those under static conditions. Therefore, the accuracy of corrosion resistance detection cannot be effectively guaranteed.

[0005] To achieve the above object, the present invention provides the following technical solution: a corrosion resistance testing device for oil drilling rigs, comprising:

[0006] Ultrasonic detection sensors, which are mounted on the inner wall surface of the corrosion-resistant body and are used to detect oil rigs in different conditions in real time;

[0007] Ultrasonic vibrators are arranged in two groups and installed on both sides of the inner wall surface of the corrosion-resistant body, and are used to evenly distribute the particles and chemical components of the corrosive liquid in the corrosive liquid tank to avoid excessively high or low local concentrations, increase the activity of the corrosive medium, accelerate the corrosion reaction, and simulate a certain degree of flow environment under static conditions, thereby more accurately simulating the corrosion rate in the actual drilling environment;

[0008] Dynamic stress monitoring assembly, which is slidably connected to the inside of the corrosion-resistant vertical slide frame, is used to drive the drill structure to perform corrosion simulation tests under different conditions;

[0009] The all-round fixed-point comparison detection component is installed in the back-side concession slot frame of the corrosion-resistant body. It is used to form a spray operation of multi-medium corrosive liquid on the drilling rig at a fixed point, and enables accurate analysis of the corrosion resistance of different components of the drilling rig.

[0010] Preferably, the omnidirectional fixed-point contrast detection component includes:

[0011] A transverse shift rail, a sliding connection plate, a guide shift column and an electric swivel joint, wherein the left and right ends of the transverse shift rail are installed on the inner wall surface of the yielding slot frame, the sliding connection plate is slidably connected to the inside of the transverse shift rail, the guide shift column is installed on the front end frame surface of the sliding connection plate, the outside of the guide shift column is slidably connected to the sliding frame, the electric swivel joint is installed on the side of the sliding frame, and the side end of the electric swivel joint is fastened to a synchronous protective frame.

[0012] Preferably, an electric propulsion rod is installed inside the synchronous protection frame, and the bottom of the electric propulsion rod is fastened with an angle detection connector, the bottom of the angle detection connector is rotatably connected to a drive motor box, the side end of the drive motor box is fastened with a hydraulic guide rod, and the front end of the hydraulic guide rod is installed with a spray contact guide head.

[0013] Preferably, the dorsal surface of the electric propulsion rod is fastened with a connection position detection rack, and the connection position detection rack is composed of a connection head, a position detection sensor and a rack, and the rack side of the connection position detection rack is meshingly connected with a driving gear, and an energy-saving output motor is installed on the top of the center end of the driving gear, and the outer sleeve of the energy-saving output motor is provided with a hoop frame, and the hoop frame is fastened to the side surface of the sliding connecting plate.

[0014] Preferably, the dynamic stress monitoring component comprises:

[0015] A transverse connecting plate, a protective base frame, a driving brushless motor and a synchronous angle bearing seat, wherein the transverse connecting plate is located in an internal sliding connection of a corrosion-resistant vertical slide frame, and the protective base frame forms two groups which are respectively fastened to the bottom of the transverse connecting plate, and the driving brushless motor and the synchronous angle bearing seat are respectively installed inside the two groups of protective base frames, and the side ends of the driving brushless motor and the synchronous angle bearing seat are fastened with angle rotation detection sensors.

[0016] Preferably, the side end of the angle rotation detection sensor is fastened to a ring network communication structure frame, and the ring network communication structure frame connects the ultrasonic detection sensor, the position detection sensor and the angle rotation detection sensor through a ring network to form a closed-loop communication structure. A reference electrode and a working electrode are respectively installed on the surface of the ring network communication structure frame, so that the contact ends of the reference electrode and the working electrode are in contact with the surface of the drilling rig, and a high-precision data collector is installed at the bottom of the center end of the frame of the ring network communication structure frame.

[0017] Preferably, a dual-axis pneumatic cylinder is installed at the bottom of the high-precision data collector, and an anti-corrosion contact plate is installed at the bottom end of the dual-axis pneumatic cylinder. The left and right ends of the anti-corrosion contact plate are fastened with a folding sheet metal frame, and the bottom of the dual-axis pneumatic cylinder is fastened with a corrosion-resistant pneumatic adjustment clamping adsorption component, which is used to fix the drilling rig.

[0018] Preferably, a multi-media corrosive liquid storage tank is installed on the back surface of the corrosion-resistant body, the side end of the multi-media corrosive liquid storage tank is connected to an alkaline regulating pump, the side end of the alkaline regulating pump is connected to a two-way circulation valve pipe, the side end of the two-way circulation valve pipe is connected to an acidic regulating pump, the top of the acidic regulating pump is connected to a mixing pump box, the side end of the mixing pump box is connected to the yield slot frame and the spray contact guide through a pipeline, and a high-temperature and high-pressure regulator and a logic detection controller are respectively installed on the top of the corrosion-resistant body.

[0019] Preferably, a vertical adjusting gas rod is installed on the front end surface of the corrosion-resistant body, and a closing plate is fastened to the bottom of the vertical adjusting gas rod, and the closing plate is used to form an automated detection operation with an external feeding and unloading robotic arm. Transverse adjusting gas rods are symmetrically installed on the left and right sides of the bottom end of the corrosion-resistant body, and the side ends of the transverse adjusting gas rods are fastened to sliding sealing plates. Sliding grooves are provided on the left and right side surfaces of the corrosion-resistant body, and the sliding sealing plate slides at the top of the corrosion liquid tank and slides back and forth through the sliding grooves. A pressure regulating valve and a temperature regulating valve are respectively provided on the side surfaces of the corrosion-resistant body, and a drain pipe end is provided on the bottom side of the corrosion-resistant body, and the drain pipe end is connected to an external multiple filtration and purification structure.

[0020] A testing method for a petroleum drilling rig corrosion resistance testing device comprises the following steps:

[0021] S1. First, the closing plate is driven to open by the vertically adjusting gas rod, and the disassembled drilling machine components are delivered to the dynamic stress pressure monitoring component by the external feeding and unloading mechanical arm, and fixedly clamped by the dynamic stress pressure monitoring component;

[0022] S2. Then, according to the test requirements, the high temperature and high pressure regulators are started in sequence, and with the cooperation of the logic detection controller, the dynamic stress pressure monitoring component drives the fixed drilling machine components to stop at the middle end of the corrosion-resistant body, and adjusts the position angle of the drilling machine components;

[0023] S3. Secondly, by using the multi-media corrosive liquid storage tank, the alkaline regulating pump, the two-way circulation valve pipe and the acid regulating pump form the test requirements under different conditions, so as to transport the formed multi-media corrosive liquid to the spray contact guide head, so that the all-round fixed-point comparison detection component can perform contact operation on the drilling machine components;

[0024] S4. Then, after the above test, the lateral adjustment gas rod drives the sliding sealing plate at the top of the corrosive liquid tank to slide, so that the corrosive liquid tank is opened, and the corrosion-resistant vertical slide frame is used to drive the dynamic stress pressure monitoring component and the fixed drilling machine components into the corrosive liquid tank, and the ultrasonic vibrator is started, and the dynamic stress pressure monitoring component synchronously drives the drilling machine components in the corrosive liquid tank to form dynamic adjustment, so as to achieve the motion state simulation detection that meets the actual operation of the drilling rig.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, the sliding connection plate is moved to a predetermined lateral position through a lateral displacement linear rail in cooperation with an all-round fixed-point comparison detection component, and the energy-saving output motor is started, so that the energy-saving output motor drives the driving gear to rotate, and then the meshing connection position detection rack forms a linear motion, so that the propulsion distance can be monitored and precise control can be ensured, so that the electric propulsion rod moves the related structure carried by the slide in the vertical direction to a predetermined height through the guide shift column, and then adjusts the angle of the synchronous protection frame through the electric swivel to ensure that the spray contact guide head is aligned with the target position, and the operation of the electric propulsion rod, The spray contact guide can be precisely adjusted again, so that when the spray contact guide reaches the predetermined position, the spray system can be started to evenly spray the multi-media corrosive liquid on different components of the drilling rig, and the spray pressure, flow, spray time and spray position and other parameters can be set in the ring network communication structure frame, so that the test time and number of cycles under different conditions can be set according to actual needs, so as to monitor various parameters in the spray process in real time, ensure that the spray is uniform and covers the target area, and effectively simulate the continuous flow of drilling fluid during operation according to the different pressures and environmental factors to which the drilling rig is subjected, so as to detect the corrosion rate and test accuracy.

[0027] 2. In the present invention, the corrosion-resistant pneumatic adjustment clamping adsorption part is used to fix the drilling rig in cooperation with the dynamic stress monitoring component to ensure its stable position, and then the brushless motor is started to drive the fixed drilling rig components through the synchronous angle bearing seat to adjust the angle in cooperation with the angle rotation detection sensor, and in cooperation with the above-mentioned hydraulic guide rod, the spray contact guide head applies mechanical pressure on the drilling rig components at a point position, and the above-mentioned all-round fixed-point comparison detection component can be operated synchronously, so as to monitor the angle change and stress state of the drilling rig components in real time to ensure that the applied stress meets the set value, and then the ultrasonic detection sensor, the position detection sensor and the angle rotation detection sensor are connected through a ring network to form a closed-loop communication structure, so as to improve the reliability and real-time performance of data transmission, and The reference electrode and the working electrode are in contact with the surface of the drilling rig to ensure the accuracy of the test data. After the operation of the above-mentioned all-round fixed-point comparison detection component, the corrosion potential and other relevant parameters of the drilling rig components can be monitored in real time, so that the high-precision data collector can record the data of the ultrasonic detection sensor, the position detection sensor and the angle rotation detection sensor. The collected data is processed by subsequent data analysis software to evaluate the corrosion resistance and mechanical properties of the drilling rig components, so as to analyze the corrosion rate, corrosion morphology and mechanical property changes under different conditions. An integrated corrosion resistance test device is formed as a whole, so that the spray contact guide can be used to apply mechanical pressure to the drilling rig components at certain points, which is convenient for realizing a comprehensive environmental simulation test of the drilling rig, reducing manual intervention and improving the consistency and reliability of the test results.

[0028] 3. In the present invention, by cooperating with a mixing pump box, a multi-media corrosive liquid storage tank, an alkaline regulating pump, an acid regulating pump and a two-way circulation valve pipe, a suitable corrosive medium is selected according to the test requirements and stored in the multi-media corrosive liquid storage tank. The alkaline regulating pump and the acid regulating pump are used to adjust the pH value of the corrosive medium through the two-way circulation valve pipe to ensure that the pH value of the corrosive medium reaches the set value and is then transported to the mixing pump box. After the different media are evenly mixed, they are transported to the spray contact guide through the pipeline, which facilitates the all-round fixed-point comparison detection component to perform spray corrosion resistance test operations on different positions of the drilling rig components, improves the comprehensiveness and diversity of the test, and more accurately evaluates the performance of the drilling rig components under different corrosion conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the main view of a corrosion resistance testing device for oil drilling rigs of the present invention;

[0030] Figure 2 It is a schematic structural diagram of a side view of a corrosion resistance testing device for a petroleum drilling rig according to the present invention;

[0031] Figure 3This is a schematic diagram of the internal cross-sectional structure of a main body in a corrosion resistance testing device for a petroleum drilling rig according to the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of a main body in a corrosion resistance testing device for a petroleum drilling rig according to the present invention;

[0033] Figure 5 It is a structural schematic diagram of the installation positions of an ultrasonic detection sensor and an ultrasonic vibrator in a corrosion resistance testing device for a petroleum drilling rig of the present invention;

[0034] Figure 6 It is a structural schematic diagram of a dynamic stress monitoring component in a corrosion resistance testing device for a petroleum drilling rig according to the present invention;

[0035] Figure 7 It is a structural schematic diagram of an all-round fixed-point comparison detection component in a corrosion resistance testing device for a petroleum drilling rig of the present invention;

[0036] Figure 8 The present invention is a kind of oil drilling rig corrosion resistance testing device Figure 7 A schematic diagram of the enlarged structure at point A;

[0037] Fig. 9 The present invention is a kind of oil drilling rig corrosion resistance testing device Figure 7 Schematic diagram of the enlarged structure at B.

[0038] In the figure: 1. Corrosion-resistant body; 2. Vertical adjustment gas rod; 3. Closing plate; 4. Horizontal adjustment gas rod; 5. Sliding groove; 6. Pressure regulating valve; 7. Temperature regulating valve; 8. High temperature and high pressure regulator; 9. Logic detection controller; 10. Mixing pump box; 11. Multi-media corrosive liquid storage tank; 12. Alkaline regulating pump; 13. Acid regulating pump; 14. Two-way circulation valve pipe; 15. Dynamic stress pressure monitoring component; 150. Horizontal connecting plate; 151. Protective base frame; 152. Drive brushless motor; 153. Synchronous angle bearing seat; 154. Angle rotation detection sensor; 155. Ring network communication structure frame; 156. High-precision data collector; 157. Folding sheet metal frame; 158. Double-axis pneumatic cylinder; 15 9. Anti-corrosion contact plate; 1590. Corrosion-resistant pneumatic adjustment clamping adsorption part; 16. Corrosion liquid tank; 17. Ultrasonic detection sensor; 18. All-round fixed-point comparison detection component; 180. Lateral displacement linear rail; 181. Sliding connecting plate; 182. Electric swivel; 183. Synchronous protection frame; 185. Hydraulic guide rod; 186. Electric propulsion rod; 187. Guide shift column; 188. Spray contact guide head; 189. Hoop frame; 1890. Energy-saving output motor; 1891. Drive gear; 1892. Connection position detection rack; 1893. Angle detection connector; 1894. Drive motor box; 19. Ultrasonic vibrator; 20. Sliding sealing plate; 21. Corrosion-resistant vertical slide frame. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the present invention, reference is made to Figure 1-Figure 9 As shown: A corrosion resistance testing device for oil drilling rigs, comprising:

[0041] An ultrasonic detection sensor 17, which is mounted on the inner wall surface of the corrosion-resistant body 1, and is used to detect oil rigs under different conditions in real time;

[0042] Ultrasonic vibrators 19 are arranged in two groups and installed on both sides of the inner wall surface of the corrosion-resistant body 1, and are used to evenly distribute the particles and chemical components of the corrosive liquid in the corrosive liquid tank 16 to avoid excessively high or low local concentrations, increase the activity of the corrosive medium, accelerate the corrosion reaction, and simulate a certain degree of flow environment under static conditions, thereby more accurately simulating the corrosion rate in the actual drilling environment;

[0043] The dynamic stress monitoring assembly 15 is slidably connected to the inside of the corrosion-resistant vertical slide frame 21 and is used to drive the drill structure to perform corrosion simulation tests under different conditions;

[0044] The all-round fixed-point comparison detection component 18 is installed in the back side of the corrosion-resistant body 1 to form a spray operation of multi-medium corrosive liquid on the drilling rig, and to accurately analyze the corrosion resistance of different components of the drilling rig.

[0045] In the present invention, according to Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the all-round fixed-point comparison detection component 18 includes:

[0046] The lateral shift rail 180, the sliding connection plate 181, the guide shift column 187 and the electric swivel 182, the left and right ends of the lateral shift rail 180 are installed on the inner wall surface of the yielding slot frame, the sliding connection plate 181 is slidably connected to the inside of the lateral shift rail 180, the guide shift column 187 is installed on the front end frame surface of the sliding connection plate 181, the outside of the guide shift column 187 is slidably connected to the sliding frame, the electric swivel 182 is installed on the side of the sliding frame, and the side end of the electric swivel 182 is fastened with a synchronous protective frame 183.

[0047] An electric propulsion rod 186 is installed inside the synchronous protection frame 183, and the bottom of the electric propulsion rod 186 is fastened with an angle detection connector 1893. The bottom of the angle detection connector 1893 is rotatably connected to a drive motor box 1894. The side end of the drive motor box 1894 is fastened with a hydraulic guide rod 185, and a spray contact guide head 188 is installed at the front end of the hydraulic guide rod 185.

[0048] The back surface of the electric propulsion rod 186 is fastened with a connection position detection rack 1892, which is composed of a connector, a position detection sensor and a rack. The rack side of the connection position detection rack 1892 is meshingly connected with a driving gear 1891. An energy-saving output motor 1890 is installed on the top of the center end of the driving gear 1891. The outer sleeve of the energy-saving output motor 1890 is provided with a hoop frame 189, which is fastened to the side surface of the sliding connecting plate 181.

[0049] In a specific solution, the sliding connection plate 181 is moved to a predetermined lateral position by lateral displacement of the linear rail 180, and the energy-saving output motor 1890 is started, so that the energy-saving output motor 1890 drives the driving rotating gear 1891 to rotate, and then the meshing connection position detection rack 1892 forms a linear motion, so that the propulsion distance can be monitored and accurate control can be ensured, so that the electric propulsion rod 186 moves the related structure carried by the slide in the vertical direction to a predetermined height through the guide displacement column 187, and then the synchronous protection frame 183 is adjusted through the electric swivel 182. The angle of the spray contact guide 188 is ensured to be aligned with the target position, and the operation of the electric propulsion rod 186 enables the spray contact guide 188 to be accurately adjusted again, so that when the spray contact guide 188 reaches the predetermined position, the spray system is started to spray the multi-medium corrosive liquid evenly on different components of the drilling rig, and the parameters such as the spray pressure, flow, spray time and spray position are set in the ring network communication structure frame 155, so that the test time and number of cycles under different conditions can be set according to actual needs, so as to facilitate real-time monitoring of various parameters in the spray process and ensure that the spray is uniform and covers the target area.

[0050] In the present invention, according to Figure 3-Figure 6 As shown, the dynamic stress monitoring component 15 includes:

[0051] The transverse connecting plate 150, the protective base frame 151, the driving brushless motor 152 and the synchronous angle bearing seat 153, the transverse connecting plate 150 is located in the internal sliding connection of the corrosion-resistant vertical slide frame 21, the protective base frame 151 forms two groups that are respectively fastened to the bottom of the transverse connecting plate 150, the driving brushless motor 152 and the synchronous angle bearing seat 153 are respectively installed in the two groups of protective base frames 151, and the side ends of the driving brushless motor 152 and the synchronous angle bearing seat 153 are fastened with an angle rotation detection sensor 154.

[0052] The side end of the angle rotation detection sensor 154 is fastened to a ring network communication structure frame 155, which connects the ultrasonic detection sensor 17, the position detection sensor and the angle rotation detection sensor 154 through a ring network to form a closed-loop communication structure. A reference electrode and a working electrode are respectively installed on the surface of the ring network communication structure frame 155, so that the contact ends of the reference electrode and the working electrode are in contact with the surface of the drilling rig. A high-precision data collector 156 is installed at the bottom of the center end of the frame of the ring network communication structure frame 155.

[0053] A double-axis pneumatic cylinder 158 is installed at the bottom of the high-precision data collector 156, and an anti-corrosion contact plate 159 is installed at the bottom of the double-axis pneumatic cylinder 158. The left and right ends of the anti-corrosion contact plate 159 are fastened with a folding sheet metal frame 157, and the bottom of the double-axis pneumatic cylinder 158 is fastened with a corrosion-resistant pneumatic adjustment clamping adsorption component 1590, which is used to fix the drilling rig.

[0054] In a specific scheme, first, the closing plate 3 is driven to open by the vertical adjustment gas rod 2, and the disassembled drilling machine components are advanced to the corrosion-resistant pneumatic adjustment clamping adsorption part 1590 by using the external feeding and unloading robot arm, so that the corrosion-resistant pneumatic adjustment clamping adsorption part 1590 fixes the drilling machine to ensure its stable position, and then the brushless motor 152 is started to drive the fixed drilling machine components through the synchronous angle bearing seat 153 to adjust the angle in cooperation with the angle rotation detection sensor 154, and in cooperation with the above-mentioned hydraulic guide rod 185, the spray contact guide head 188 applies mechanical pressure on the drilling machine components at a point position, and the above-mentioned all-round fixed-point comparison detection component 18 can be operated synchronously, so as to monitor the angle change and stress state of the drilling machine components in real time to ensure that the applied stress meets the set value, and then The ultrasonic detection sensor 17, the position detection sensor and the angle rotation detection sensor 154 are connected through a ring network to form a closed-loop communication structure, and the reference electrode and the working electrode are in contact with the surface of the drilling rig. After the operation of the above-mentioned all-round fixed-point comparison detection component 18, the corrosion potential and other related parameters of the drilling rig components can be monitored in real time, so that the high-precision data collector 156 records the data of the ultrasonic detection sensor 17, the position detection sensor and the angle rotation detection sensor 154, and the collected data is processed by subsequent data analysis software to evaluate the corrosion resistance and mechanical properties of the drilling rig components, thereby analyzing the corrosion rate, corrosion morphology and mechanical property changes under different conditions, and forming an integrated corrosion resistance test device as a whole, which is convenient for realizing a comprehensive environmental simulation test of the drilling rig.

[0055] In the present invention, according to Figure 1-Figure 4 As shown, a multi-media corrosive liquid storage tank 11 is installed on the back surface of the corrosion-resistant body 1, and the side end of the multi-media corrosive liquid storage tank 11 is connected to an alkaline regulating pump 12, and the side end of the alkaline regulating pump 12 is connected to a two-way circulation valve pipe 14, and the side end of the two-way circulation valve pipe 14 is connected to an acid regulating pump 13, and the top of the acid regulating pump 13 is connected to a mixing pump box 10, and the side end of the mixing pump box 10 is connected to the yield slot frame and the spray contact guide 188 through a pipeline, and a high-temperature and high-pressure regulator 8 and a logic detection controller 9 are respectively installed on the top of the corrosion-resistant body 1.

[0056] A vertical adjustment gas rod 2 is installed on the front end surface of the corrosion-resistant body 1, and a closing plate 3 is fastened to the bottom of the vertical adjustment gas rod 2. The closing plate 3 is used to form an automated detection operation with an external feeding and unloading robot arm. Transverse adjustment gas rods 4 are symmetrically installed on the left and right sides of the bottom end of the corrosion-resistant body 1, and the side ends of the transverse adjustment gas rods 4 are fastened to a sliding sealing plate 20. Sliding grooves 5 are provided on the left and right side surfaces of the corrosion-resistant body 1. The sliding sealing plate 20 slides at the top of the corrosion liquid tank 16 and slides back and forth through the sliding grooves 5. A pressure regulating valve 6 and a temperature regulating valve 7 are respectively provided on the side surfaces of the corrosion-resistant body 1. A drainage pipe end is provided on the bottom side of the corrosion-resistant body 1, and the drainage pipe end is connected to an external multiple filtering and purification structure.

[0057] In a specific scheme, the oil drilling rig component to be tested is placed inside the corrosion-resistant body 1 through an external feeding and discharging mechanical arm, and fixed with a closing plate 3 and a sliding sealing plate 20, and a corrosion-resistant pneumatic adjustment clamping adsorption part 1590 is used to fix the drilling rig component to ensure that it does not move during the test. A suitable corrosive medium is selected according to the test requirements and stored in a multi-medium corrosive liquid storage tank 11. The alkaline regulating pump 12 and the acid regulating pump 13 are used to adjust the pH value of the corrosive medium through a two-way circulation valve pipe 14 to ensure that the pH value reaches the set value and is then transported to the mixing pump box 10. After the different media are mixed evenly, they are transported to the spray contact guide 188 through a pipeline to facilitate the operation of the above-mentioned all-round fixed-point comparison detection component 18. After the spray corrosion resistance test comparison of different positions of the drilling rig components, the lateral adjustment gas rod 4 drives the sliding sealing plate 2 0 is located at the top of the corrosive liquid tank 16 and slides, so that the corrosive liquid tank 16 is opened, and the dynamic stress pressure monitoring component 15 and the fixed drilling machine components are driven into the corrosive liquid tank 16 by the corrosion-resistant vertical slide frame 21, and the ultrasonic vibrator 19 is started, and the dynamic stress pressure monitoring component 15 synchronously drives the drilling machine components in the corrosive liquid tank 16 to form dynamic adjustment, so as to meet the motion state simulation detection of the actual operation of the drilling rig, and among them, when operating under the above-mentioned different conditions, the high-temperature and high-pressure regulator 8 can be started according to the needs, so that according to the set parameters, the temperature and pressure in the corrosion-resistant body 1 are adjusted to simulate the actual drilling environment, and the pressure and temperature are further finely adjusted through the pressure regulating valve 6 and the temperature regulating valve 7. After the test is completed, the corrosive liquid can be discharged through the discharge pipe end, and processed through the external multiple filtering and purification structure to ensure environmentally friendly discharge.

[0058] The wiring diagram of the high temperature and high pressure regulator 8, the driving brushless motor 152, the angle rotation detection sensor 154, the ring network communication structure frame 155, the high-precision data collector 156, the ultrasonic detection sensor 17, the energy-saving output motor 1890, the connection position detection rack 1892, the driving motor box 1894 and the ultrasonic vibrator 19 in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the high temperature and high pressure regulator 8, the driving brushless motor 152, the angle rotation detection sensor 154, the ring network communication structure frame 155, the high-precision data collector 156, the ultrasonic detection sensor 17, the energy-saving output motor 1890, the connection position detection rack 1892, the driving motor box 1894 and the ultrasonic vibrator 19 are no longer explained in detail, and the internal related structures of the corrosion-resistant body 1 are coated with a corrosion-resistant layer.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrosion resistance testing device for oil drilling rigs, characterized by: Included are: An ultrasonic detection sensor (17) is mounted on the inner wall surface of the corrosion-resistant body (1) and is used to detect oil rigs under different conditions in real time; Ultrasonic vibrators (19) are arranged in two groups and installed on both sides of the inner wall surface of the corrosion-resistant body (1), and are used to evenly distribute the particles and chemical components of the corrosive liquid in the corrosive liquid tank (16) to avoid excessively high or low local concentrations, increase the activity of the corrosive medium, accelerate the corrosion reaction, and simulate a certain degree of flow environment under static conditions, thereby more accurately simulating the corrosion rate in the actual drilling environment; A dynamic stress monitoring component (15) is slidably connected to the interior of the corrosion-resistant vertical slide frame (21) and is used to drive the drill rig structure to perform corrosion simulation tests under different conditions; An all-round fixed-point comparison detection component (18), which is installed in the back side of the corrosion-resistant body (1) to form a spray operation of a multi-medium corrosive liquid on the drilling rig at a fixed point, and to accurately analyze the corrosion resistance of different components of the drilling rig; The all-round fixed-point comparison detection component (18) comprises: A transverse displacement rail (180), a sliding connection plate (181), a guide displacement column (187) and an electric swivel (182), wherein the left and right ends of the transverse displacement rail (180) are mounted on the inner wall surface of the clearance slot frame, the sliding connection plate (181) is slidably connected to the inside of the transverse displacement rail (180), the guide displacement column (187) is mounted on the front end frame surface of the sliding connection plate (181), the outside of the guide displacement column (187) is slidably connected to a sliding frame, the electric swivel (182) is mounted on the side of the sliding frame, and the side end of the electric swivel (182) is fastened to a synchronous protection frame (183); An electric propulsion rod (186) is installed inside the synchronous protection frame (183); the bottom of the electric propulsion rod (186) is fastened with an angle detection connector (1893); the bottom of the angle detection connector (1893) is rotatably connected to a drive motor box (1894); the side end of the drive motor box (1894) is fastened with a hydraulic guide rod (185); and the front end of the hydraulic guide rod (185) is installed with a spray contact guide head (188); The back surface of the electric propulsion rod (186) is fastened with a connection position detection rack (1892), the connection position detection rack (1892) is composed of a connection head, a position detection sensor and a rack, the rack side of the connection position detection rack (1892) is meshingly connected with a driving rotating tooth (1891), the top of the center end of the driving rotating tooth (1891) is installed with an energy-saving output motor (1890), the outside of the energy-saving output motor (1890) is provided with a hoop frame (189), and the hoop frame (189) is fastened to the side surface of the sliding connection plate (181); The dynamic stress monitoring component (15) comprises: A transverse connecting plate (150), a protective base frame (151), a driving brushless motor (152) and a synchronous angle bearing seat (153), wherein the transverse connecting plate (150) is slidably connected inside the corrosion-resistant vertical slide slot frame (21), the protective base frame (151) forms two groups respectively fastened to the bottom of the transverse connecting plate (150), the driving brushless motor (152) and the synchronous angle bearing seat (153) are respectively installed inside the two groups of protective base frames (151), and the side ends of the driving brushless motor (152) and the synchronous angle bearing seat (153) are both fastened to an angle rotation detection sensor (154); The side end of the angle rotation detection sensor (154) is fastened to a ring network communication structure frame (155), and the ring network communication structure frame (155) connects the ultrasonic detection sensor (17), the position detection sensor and the angle rotation detection sensor (154) through a ring network to form a closed-loop communication structure. A reference electrode and a working electrode are respectively installed on the surface of the ring network communication structure frame (155), so that the contact ends of the reference electrode and the working electrode are in contact with the surface of the drilling rig. A high-precision data collector (156) is installed at the bottom of the center end of the frame of the ring network communication structure frame (155); A double-axis pneumatic cylinder (158) is installed at the bottom of the high-precision data collector (156), and an anti-corrosion contact plate (159) is installed at the bottom of the double-axis pneumatic cylinder (158). The left and right ends of the anti-corrosion contact plate (159) are fastened to a folding sheet metal frame (157). A corrosion-resistant pneumatic adjustment clamping adsorption member (1590) is fastened to the bottom of the double-axis pneumatic cylinder (158), and the corrosion-resistant pneumatic adjustment clamping adsorption member (1590) is used to fix the drilling rig; A vertical adjustment gas rod (2) is installed on the front end surface of the corrosion-resistant body (1), and a closing plate (3) is fastened to the bottom of the vertical adjustment gas rod (2). The closing plate (3) is used to form an automated detection operation with an external feeding and discharging robot arm. Transverse adjustment gas rods (4) are symmetrically installed on the left and right sides of the bottom end of the corrosion-resistant body (1), and the side ends of the transverse adjustment gas rods (4) are fastened to a sliding sealing plate (20). Sliding grooves (5) are provided on the left and right side surfaces of the corrosion-resistant body (1). The sliding sealing plate (20) is located at the top end of the corrosion liquid tank (16) and slides back and forth through the sliding grooves (5). A pressure regulating valve (6) and a temperature regulating valve (7) are respectively provided on the side surfaces of the corrosion-resistant body (1). A drainage pipe end is provided on the bottom side of the corrosion-resistant body (1), and the drainage pipe end is connected to an external multi-filter purification structure.

2. The oil drilling rig corrosion resistance testing device according to claim 1, characterized in that: A multi-medium corrosive liquid storage tank (11) is installed on the back surface of the corrosion-resistant body (1), the side end of the multi-medium corrosive liquid storage tank (11) is connected to an alkaline regulating pump (12), the side end of the alkaline regulating pump (12) is connected to a two-way circulation valve pipe (14), the side end of the two-way circulation valve pipe (14) is connected to an acid regulating pump (13), the top of the acid regulating pump (13) is connected to a mixing pump box (10), the side end of the mixing pump box (10) is connected to the yield groove frame and the spray contact guide (188) through a pipeline, and a high-temperature and high-pressure regulator (8) and a logic detection controller (9) are respectively installed on the top of the corrosion-resistant body (1).

3. A testing method for a corrosion resistance testing device for a petroleum drilling rig, characterized in that: The oil drilling rig corrosion resistance testing device according to claim 2 is used, comprising the following steps: S1. First, the closing plate (3) is driven to open by the vertical adjustment gas rod (2), and the disassembled drilling machine components are delivered to the dynamic stress pressure monitoring component (15) by the external feeding and unloading mechanical arm, and fixedly clamped by the dynamic stress pressure monitoring component (15); S2. Then, according to the test requirements, the high temperature and high pressure regulator (8) is started in sequence, and with the cooperation of the logic detection controller (9), the dynamic stress pressure monitoring component (15) drives the fixed drilling machine component to stop at the middle end of the corrosion-resistant body (1), and adjusts the position angle of the drilling machine component; S3. Secondly, the multi-medium corrosive liquid storage tank (11) is used to form the test requirements under different conditions by the alkaline regulating pump (12), the two-way circulation valve pipe (14) and the acid regulating pump (13), so as to transport the formed multi-medium corrosive liquid to the spray contact guide (188), thereby allowing the all-round fixed-point comparison detection component (18) to perform contact operation on the drilling machine components; S4. Next, after the above test, the lateral adjustment gas rod (4) drives the sliding sealing plate (20) to slide at the top of the corrosive liquid tank (16), so that the corrosive liquid tank (16) is opened, and the corrosion-resistant vertical slide frame (21) drives the dynamic stress pressure monitoring component (15) and the fixed drilling machine components into the corrosive liquid tank (16), and the ultrasonic vibrator (19) is started, and the dynamic stress pressure monitoring component (15) synchronously drives the drilling machine components located in the corrosive liquid tank (16) to form dynamic adjustment, so as to achieve the motion state simulation detection that meets the actual operation of the drilling rig.

Images